diff options
Diffstat (limited to 'gcc/configure')
| -rwxr-xr-x | gcc/configure | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/gcc/configure b/gcc/configure index 9fb0eb57..3e33a69 100755 --- a/gcc/configure +++ b/gcc/configure @@ -906,6 +906,7 @@ enable_valgrind_annotations with_stabs enable_multilib enable_multiarch +with_stack_clash_protection_guard_size enable___cxa_atexit enable_decimal_float enable_fixed_point @@ -1727,6 +1728,9 @@ Optional Packages: --with-gnu-as arrange to work with GNU as --with-as arrange to use the specified as (full pathname) --with-stabs arrange to use stabs instead of host debug format + --with-stack-clash-protection-guard-size=size + Set the default stack clash protection guard size + for specific targets as a power of two in bytes. --with-dwarf2 force the default debug format to be DWARF 2 --with-specs=SPECS add SPECS to driver command-line processing --with-pkgversion=PKG Use PKG in the version string in place of "GCC" @@ -7439,6 +7443,34 @@ $as_echo "$enable_multiarch$ma_msg_suffix" >&6; } +# default stack clash protection guard size as power of twos in bytes. +# Please keep these in sync with params.def. +stk_clash_min=12 +stk_clash_max=30 + +# Keep the default value when the option is not used to 0, this allows us to +# distinguish between the cases where the user specifially set a value via +# configure and when the normal default value is used. + +# Check whether --with-stack-clash-protection-guard-size was given. +if test "${with_stack_clash_protection_guard_size+set}" = set; then : + withval=$with_stack_clash_protection_guard_size; DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size" +else + DEFAULT_STK_CLASH_GUARD_SIZE=0 +fi + +if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \ + && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \ + || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then + as_fn_error "Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. Must be between $stk_clash_min and $stk_clash_max." "$LINENO" 5 +fi + + +cat >>confdefs.h <<_ACEOF +#define DEFAULT_STK_CLASH_GUARD_SIZE $DEFAULT_STK_CLASH_GUARD_SIZE +_ACEOF + + # Enable __cxa_atexit for C++. # Check whether --enable-__cxa_atexit was given. if test "${enable___cxa_atexit+set}" = set; then : @@ -18463,7 +18495,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 18466 "configure" +#line 18498 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -18569,7 +18601,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 18572 "configure" +#line 18604 "configure" #include "confdefs.h" #if HAVE_DLFCN_H |